package com.lv.mall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.lv.common.constant.ProductConstant;
import com.lv.mall.product.dao.AttrAttrgroupRelationDao;
import com.lv.mall.product.dao.AttrGroupDao;
import com.lv.mall.product.dao.CategoryDao;
import com.lv.mall.product.entity.AttrAttrgroupRelationEntity;
import com.lv.mall.product.entity.AttrGroupEntity;
import com.lv.mall.product.entity.CategoryEntity;
import com.lv.mall.product.service.CategoryService;
import com.lv.mall.product.vo.AttrGroupRelationVo;
import com.lv.mall.product.vo.AttrRespVo;
import com.lv.mall.product.vo.AttrVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.lv.common.utils.PageUtils;
import com.lv.common.utils.Query;

import com.lv.mall.product.dao.AttrDao;
import com.lv.mall.product.entity.AttrEntity;
import com.lv.mall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;


// 基本类型才有分组
@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao relationDao;

    @Autowired  // 分组
    AttrGroupDao attrGroupDao;

    @Autowired  // 分类
    CategoryDao categoryDao;

    @Autowired
    CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();   // po   对应数据库 保存到数据库
        BeanUtils.copyProperties(attr, attrEntity);  // (vo,po)  将vo的值封装到po里 前提：属性名一一对应
        // 1、保存基本数据
        this.save(attrEntity);
        // 2、保存关联关系 && attr.getAttrGroupId() != null
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null) {  // 基本属性 需要保存分组关系
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationDao.insert(relationEntity);
        }

    }

    /**
     * java.lang.IllegalStateException: org.springframework.context.annotation.AnnotationConfigApplicationContext@7a31a95 has been closed already
     * 重启可以恢复
     */
    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type", "base".equalsIgnoreCase(type) ? ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());

        // 不同情况封装不同条件
        if (catelogId != 0) {   // =0 查询所有
            queryWrapper.eq("catelog_id", catelogId);
        }
        // 检索条件
        String key = (String) params.get("key");

        if (!StringUtils.isEmpty(key)) {
            // attr_id  attr_name
            queryWrapper.and((wrapper) -> {
                wrapper.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );

        PageUtils pageUtils = new PageUtils(page);

        List<AttrEntity> records = page.getRecords();
        // 流式编程 对数据重新处理
        List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);
            // 设置分类和分组的名字   销售属性不需要设置属性分组
            if ("base".equalsIgnoreCase(type)) {
                // 关联关系表
                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null && attrId.getAttrGroupId() != null) {    // 关联关系中 groupId 不能是null
                    // 查询当前分组的信息
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                    // 设置组名
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }

            // 组ID
//            Long attrGroupId = attrId.getAttrGroupId();
            // 分组DAO

            // 设置分类
            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }

            return attrRespVo;
        }).collect(Collectors.toList());// 收集成一个集合

        // respVos 设置到pageUtils里
        pageUtils.setList(respVos);
        return pageUtils;
    }

    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo respVo = new AttrRespVo();

        // 先查询详细信息
        AttrEntity attrEntity = this.getById(attrId);

        // 数据拷贝
        BeanUtils.copyProperties(attrEntity, respVo);
        // 基本数据类型
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //  1、分组信息设置
            AttrAttrgroupRelationEntity attrgroupRelation = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
            // 非空判断
            if (attrgroupRelation != null) {
                // 分组ID
                respVo.setAttrGroupId(attrgroupRelation.getAttrGroupId());
                // 分组信息
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupRelation.getAttrGroupId());

                if (attrGroupEntity != null) {
                    // 分组名字
                    respVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }

        // 2、分类信息

        // 所属分类的完整路径
        Long catelogId = attrEntity.getCatelogId();

        Long[] catelogPath = categoryService.findCatelogPath(catelogId);

        respVo.setCatelogPath(catelogPath);

        // 分类的名字
        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity != null) {
            respVo.setCatelogName(categoryEntity.getName());
        }

        return respVo;
    }

    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        // 基本数据
        AttrEntity attrEntity = new AttrEntity();

        BeanUtils.copyProperties(attr, attrEntity);
        // 基本修改
        this.updateById(attrEntity);

        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            // 1、修改分组关联
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();

            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());

            // 如果原来不存在分组属性为新增操作，如果存在为修改操作
            Long count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));

            if (count > 0) {    // 修改

                relationDao.update(relationEntity, new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));


            } else {    // 新增
                relationDao.insert(relationEntity);
            }
        }


    }

    /**
     * 根据分组ID查找关联的所有的基本属性
     *
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        // 收集属性id
        List<Long> attrIds = entities.stream().map((attr) -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        if (attrIds == null || attrIds.size() == 0) {
            return null;
        }

        Collection<AttrEntity> attrEntities = this.listByIds(attrIds);

        return (List<AttrEntity>) attrEntities;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {
//        relationDao.delete(new QueryWrapper<>().eq("attr_id", 1L).eq("attr_group_id",1L));    只删除关联关系
        // 只发送一次删除请求    批量删除
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;

        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(entities);

    }

    /**
     * 获取当前分组没有关联的所有属性
     * 需要排除其他分组关联的
     * 还有自己关联的
     *
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        // 1、当前分组只能关联自己所属的分类里面的所有属性

        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);// 查询当前分组的信息
        Long catelogId = attrGroupEntity.getCatelogId();// 当前分类ID
        // 2、当前分组只能关联别的分组没有应用的属性
        // 1)当前分类下的其他分组(不包括当前分组)
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
//                .ne("attr_group_id", attrgroupId));   // 需要排除已经选中的
        List<Long> collect = group.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());
        // 2)这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());
        // 3)从当前分类的所有属性中移除这些属性
//        List<AttrEntity> attrEntities = this.baseMapper.selectList(

        // 需要配置规则参数 排除销售属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if (attrIds != null && attrIds.size() > 0) {
            wrapper.notIn("attr_id", attrIds);
        }

        // 模糊查询
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((w) -> {
                w.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        PageUtils pageUtils = new PageUtils(page);


        return pageUtils;
    }


}